What airlines fly to Islip, New York?

Spirit Airlines, United Airlines and Delta are the top three most popular airlines that fly to Islip, New York from Houston according to our data. Spirit Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 7 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Houston to Islip Long Island?

Frontier and Southwest are the most popular carriers operating from Houston to Islip Long Island

When did momondo last update prices for flights from Houston to Islip Long Island Airport?

Prices for flights from Houston to Islip Long Island Airport refresh daily.

How many operators does momondo search for flights from Houston to Islip Long Island Airport?

There is 1 operator available for flights from Houston to Islip Long Island Airport as of December 2025.

How old do you have to be to fly from Houston to Islip Long Island Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The required travel and health documents for your Islip Long Island Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Islip Long Island Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$88 Cheap Flights from Houston to Islip in 2025/26

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Cheap round-trip flights

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8:13 pm - 7:45 pm

IAH

ISP

22h 32m1 stop

8:00 am - 6:39 pm

ISP

IAH

11h 39m1 stop

$183Frontier

Sat, Jan 10 - Tue, Jan 13

8:16 pm - 7:03 pm

IAH

ISP

21h 47m1 stop

1:42 pm - 4:07 pm

ISP

IAH

27h 25m1 stop

$218Frontier

Wed, Jan 14 - Sun, Jan 18

8:13 pm - 7:45 pm

IAH

ISP

22h 32m1 stop

8:54 pm - 6:58 pm

ISP

IAH

23h 04m1 stop

$252Frontier

Wed, Jan 7 - Fri, Jan 16

8:30 am - 7:39 pm

IAH

ISP

10h 09m1 stop

8:00 am - 6:58 pm

ISP

IAH

11h 58m1 stop

$253Frontier

Mon, Jan 5 - Wed, Jan 14

9:38 pm - 10:46 am

IAH

ISP

12h 08m1 stop

2:31 pm - 5:12 pm

ISP

IAH

27h 41m2 stops

$279Multiple Airlines

Fri, Feb 13 - Mon, Feb 16

4:50 pm - 10:46 pm

IAH

ISP

28h 56m1 stop

8:45 pm - 4:07 pm

ISP

IAH

20h 22m1 stop

$287Frontier

Fri, Jan 16 - Sun, Jan 18

1:42 pm - 12:47 pm

IAH

ISP

22h 05m1 stop

1:22 pm - 8:40 am

ISP

IAH

20h 18m1 stop

$321Frontier

Thu, Mar 12 - Mon, Mar 16

5:10 pm - 11:30 pm

HOU

ISP

5h 20m1 stop

5:35 pm - 12:35 am

ISP

HOU

8h 00m1 stop

$345Southwest

Fri, Feb 13 - Mon, Feb 16

7:00 am - 5:00 pm

HOU

ISP

9h 00m2 stops

5:35 pm - 12:35 am

ISP

HOU

8h 00m1 stop

$374Southwest

Fri, Feb 13 - Mon, Feb 16

7:00 am - 5:00 pm

HOU

ISP

9h 00m2 stops

1:10 pm - 11:10 pm

ISP

HOU

11h 00m2 stops

$459Southwest

Fri, Feb 13 - Mon, Feb 16

Frontier flights from Houston to Islip, New York

Our best Frontier deals on Houston to Islip, New York flight tickets

Frontier

Jan 10

IAH8:13 pmHouston George Bush Intcntl

22h 32m

1 stop

ISP7:45 pmIslip Long Island

Jan 13

ISP8:00 amIslip Long Island

11h 39m

1 stop

IAH6:39 pmHouston George Bush Intcntl

$183

Find similar

Frontier

Jan 14

IAH8:16 pmHouston George Bush Intcntl

21h 47m

1 stop

ISP7:03 pmIslip Long Island

Jan 18

ISP1:42 pmIslip Long Island

27h 25m

1 stop

IAH4:07 pmHouston George Bush Intcntl

$218

Find similar

Frontier

Jan 7

IAH8:13 pmHouston George Bush Intcntl

22h 32m

1 stop

ISP7:45 pmIslip Long Island

Jan 16

ISP8:54 pmIslip Long Island

23h 04m

1 stop

IAH6:58 pmHouston George Bush Intcntl

$252

Find similar

Southwest flights from Houston to Islip, New York

Our best Southwest deals on Houston to Islip, New York flight tickets

Southwest

Feb 13

HOU5:10 pmHouston Hobby

5h 20m

1 stop

ISP11:30 pmIslip Long Island

Feb 16

ISP5:35 pmIslip Long Island

8h 00m

1 stop

HOU12:35 amHouston Hobby

$345

Find similar

Southwest

Feb 13

HOU7:00 amHouston Hobby

9h 00m

2 stops

ISP5:00 pmIslip Long Island

Feb 16

ISP5:35 pmIslip Long Island

8h 00m

1 stop

HOU12:35 amHouston Hobby

$374

Find similar

Southwest

Feb 13

HOU7:00 amHouston Hobby

9h 00m

2 stops

ISP5:00 pmIslip Long Island

Feb 16

ISP1:10 pmIslip Long Island

11h 00m

2 stops

HOU11:10 pmHouston Hobby

$459

Find similar

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Route

Depart

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Price

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 1/10

8:13 pm-7:45 pm

1 stop22h 32m

Islip Long Island

Tue 1/13

8:00 am-6:39 pm

1 stop11h 39m

$183

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 1/14

8:16 pm-7:03 pm

1 stop21h 47m

Islip Long Island

Sun 1/18

1:42 pm-4:07 pm

1 stop27h 25m

$218

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 1/7

8:13 pm-7:45 pm

1 stop22h 32m

Islip Long Island

Fri 1/16

8:54 pm-6:58 pm

1 stop23h 04m

$252

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Mon 1/5

8:30 am-7:39 pm

1 stop10h 09m

Islip Long Island

Wed 1/14

8:00 am-6:58 pm

1 stop11h 58m

$253

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 2/13

9:38 pm-10:46 am

1 stop12h 08m

Islip Long Island

Mon 2/16

2:31 pm-5:12 pm

2 stops27h 41m

$279

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 1/16

4:50 pm-10:46 pm

1 stop28h 56m

Islip Long Island

Sun 1/18

8:45 pm-4:07 pm

1 stop20h 22m

$287

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 3/12

1:42 pm-12:47 pm

1 stop22h 05m

Islip Long Island

Mon 3/16

1:22 pm-8:40 am

1 stop20h 18m

$321

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Fri 2/13

5:10 pm-11:30 pm

1 stop5h 20m

Islip Long Island

Mon 2/16

5:35 pm-12:35 am

1 stop8h 00m

$345

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Fri 2/13

7:00 am-5:00 pm

2 stops9h 00m

Islip Long Island

Mon 2/16

5:35 pm-12:35 am

1 stop8h 00m

$374

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Fri 2/13

7:00 am-5:00 pm

2 stops9h 00m

Islip Long Island

Mon 2/16

1:10 pm-11:10 pm

2 stops11h 00m

$459

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Houston to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Houston to Islip, New York is on a Thursday. Travelers who choose to depart for Islip, New York on a Thursday will often find tickets for as low as $375. The most expensive day to fly to Islip, New York is Tuesday, with ticket prices averaging around $601.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Houston in the morning is the least expensive time of day to depart. momondo users have found prices as low as $370 when looking at flights departing in the morning. Flights to Islip, New York are more costly in the afternoon, with an average ticket price of $396. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Houston to Islip, New York flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston to Islip, New York

Fastest flight time	6h 40m
Direct flights	None

The fastest flight from Houston to Islip, New York takes 6h 40m

There are no direct flights from Houston to Islip, New York. There are no popular flight routes from Houston to Islip, New York.

Search flight deals

How far is Houston to Islip Long Island by plane?
Islip Long Island is 1454.8 mi away from Houston. In terms of flight time, this usually takes a little over 6h 40m.
When did momondo last update prices for flights from Houston to Islip Long Island Airport?
Prices for flights from Houston to Islip Long Island Airport refresh daily.
How many operators does momondo search for flights from Houston to Islip Long Island Airport?
There is 1 operator available for flights from Houston to Islip Long Island Airport as of December 2025.
How old do you have to be to fly from Houston to Islip Long Island Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The required travel and health documents for your Islip Long Island Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Islip Long Island Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Houston to Islip, New York

Compare and see reviews for airlines that fly from Houston to Islip, New York with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $336	Free Cancellation	Rating 7.9 4,250 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Houston to Islip?

Finding the right flight to Islip from Houston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Islip quick and easy, saving you time and money.

Can I find flights from Houston to Islip with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Islip from Houston with this policy.

How can momondo help me find flights from Houston to Islip?

momondo helps you find the best flight between Houston and Islip by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Houston to Islip right now. Can momondo alert me if prices change?

Price alerts on flights to Islip from Houston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.